KEY POINTS
  • Keystone XL was halted by owner TC Energy after U.S. President Joe Biden this year revoked a key permit needed for a U.S. stretch of the 1,200-mile project.
  • The Keystone XL pipeline was expected to carry 830,000 barrels per day of Alberta oil sands crude to Nebraska.
  • The project was delayed for the past 12 years due to opposition from U.S. landowners, Native American tribes and environmentalists.

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Part of TransCanada's Keystone XL pipeline under construction in Atoka, Oklahoma.

A $9 billion oil pipeline that became a symbol of the rising political clout of climate change advocates and a flash point in U.S.-Canada relations was officially canceled on Wednesday.

Keystone XL, which was proposed in 2008 to bring oil from Canada's Western tar sands to U.S. refiners, was halted by owner TC Energy after U.S. President Joe Biden this year revoked a key permit needed for a U.S. stretch of the 1,200-mile project.

In this article